Shell Centre was a 33-storey, 140 m (460 ft) office tower in Calgary, Alberta, Canada. At completion in 1977, Shell Centre was the fourth tallest building in Calgary, behind Dome Tower, Bow Valley Square Two, and Stephen Avenue Place. The building was renamed 400 4th Avenue in 2024, when Shell Canada moved their offices to the Bow building in Calgary, AB. Shell removed their logo in October 2023 before moving offices.